Coin controlled liquid dispenser



c. D. wooo 2,279,650

Filegl May 10, 1939 3 Sheets-Sheet l I COIN CONTROLLED LIQUID DISPENSER Api1114, 1942.

- Inventor ,arlwfi/faad.

- Attorneys April 14, 1942. c, D D 2,279,650

COIN CONTROLLED LIQUID DISPENSER Filed May 10', 1939 3 Sheets-Sheet 2 Inventor A ttomeys April 14, 1942. c. D. WOOD I I COIN CONTROLLED LIQUID DISPENSER Filed May 10, 1939 s Sheets-Sheet s t A tiomeys Patented Apr. 14, 1942 UNITED STATES PATENT OFFICE 1 Claim.

This invention appertains to new and useful improvements in liquid dispensers and more particularly to a liquid dispenser such as is especially adapted for dispensing gasoline at service stations wherein coin controlled means is employed. The principal object of the present invention.

is to provide a coin controlled gasoline or other fuel or liquid dispensing machine which can be operated without proprietorship attendance.

Another important object of the invention is to provide a simple and inexpensive gasoline pump which is fully automatic in operation and adapted to be operated by coin controlled mechanism.

These and other objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings,

Figure 1 represents a front elevational view of the dispenser.

Figure 2 is a diagrammatic view disclosing the electrical connections between the elements of the mechanism.

Figure 3 is a fragmentary detailed sectional view of the coin chute and coin non-return means taken substantially on the line 44 of Figure 1.

Figure 4 is a fragmentary detailed sectional view disclosing the coin mover button means.

Figure 5 is a fragmentary detailed sectional view taken substantially on a line 55 of Figure 2 Figure 6 is a sectional view taken substantially on a line 6-5 of Figure 3.

Figure 7 is a sectional view taken substantially on a line 'l--'i of Figure 2..

Figure 8 is a sectional view on the line 88 of Figure 2.

Referring to the drawings wherein like numerals designate like parts, it can be seen that if desired the gasoline pump can be in the form of a lighthouse such as is generally referred to by numeral 5. Of course, the case construction can be of any shape or design desired, but will have the coin chute 6 opening through the front wall thereof and at this front wall will be the window I through which the dial 8 is visible and the discharge nozzle will connect to the turbine outlet 9.

As shown in Figure 3, the coin chute 6 will curve downwardly and terminate over the neck ll! of the coin mover case II in which the rotor I2 is operative and suitably keyed or secured to the shaft l3. This rotor 12 has the coin receivdrop from the slot 6 and incidentally pass between the fingers l3 of the coin non-return unit which is generally referred to by numeral I! (see Fig.- 6) This coin non-return means consists of" ears l8 projecting laterally from the lower portion of the chute 6 and on these cars 18 are rockably supported bell crank structures each consisting of a finger l6 and a shank IT, with the shank I l carrying weight members [9, these weight mem bers serving to hold the terminals of the fingers IS in abutting relation as shown in Figure .6. However, these weight members are only heavy enough to barely keep the fingers I6 together so that a-coin will readily spread the same apart, as it drops into the underlying pocket M of the rotor I2. However, if a-string or other line is attached to the coin itcannot be pulled back upwardly beyond the non-return unit H.

The coin mover case I I has the discharge spout 26 at its bottom and thisis disposed over the opening 2| in the coin collection receptacle 22.

Spring pressed plungers 23-23 are provided in opposite side walls of the coin mover case ll. These plungers project through barrels 24 which have binding posts 25 and these plungers are electrically connected with contacts 2625 which are adapted to be bridged by a coin carried in a pocket M of the rotor 12 as it registers with the contacts 26.

Numeral 2'! represents the resistance meter which has the branch wire 28 from the conductor 29 connected thereto, this conductor 29 extending from one binding post 2-5 to one side of the battery 30. A conductor 3| extends from the other binding post 25 to the other side of the battery 30 and from this conductor 3| a branch conductor 32 extends to the switch 21. Numeral 33 represents a conventional magnetic switch, one side of which is connected to the stationary contact of the rotary switch generally referred to by numeral 34 while the contact arm 35 of the switch 34 is connected by the conductor 36 to one side of the electric motor 31. The other side of the electric motor 3'! is connected by the conductor 38 to one side of the line switch 39 which has the line 40 connected thereto. The other side of the switch 39 has the jumper 4| to a conventional pressure control switch 42 Which has a tube 43 extending therefrom to the pump pipe 44, the latter extending from the pump 45 to the turbine 46, the turbine having the outlet 9 and being internally constructed as substantially shown in Figure '7. This turbine of course rotates the shaft 13. Numeral 41 denotes the return line from the pump pipe 44 and this has the relief valve 48 therein. Numeral 49 denotes the inlet for the 'pump 45 which is preferably of the rotary gear type.

As shown in Figure 8, the rotary switch 34 consists of the body 50 of insulation on which is the split conductor ring having the gap 52 between which the arm 53 will normally set, which can wipe the contact strip 5| to maintain the line to the motor 3'! closed when the apparatus is in operation.

For setting the gage 8, the ratchet means shown in Figure 4 is employed. This consists of the bracket 55 through the foot 56 of which is slidably disposed the rod 57, this rod also extending through the front of the case structure 5 having a finger engageable button 58 between which and the case 5 a coiled compression spring 59 is interposed. The inner end of the rod 57 carries the pawl 60 which is slidably disposed through the lug 6| which projects laterally from the case 62 of the dial 8. Numeral 63 represents a coiled spring for projecting the pawl 60 toward the ratchet wheel 64. This ratchet wheel is suitably secured to the shaft I 3. This machine is operated by inserting a coin or check into the chute 6. The coin passes downwardly between the gates l6 which, of course, preclude the possibility of the coin being retrieved by a string or other attached'member. The coin lodges in a pocket H of the rotor 12 and by rotating the shaft l3 by the pawl 60 and ratchet 64, the coin is brought into position bridging the contacts 26. The resistance of the metal in the coin is registered on a galvanometer which has two additional contacts allowing the same to serve as a single pole switch. This switch controls a magnetic switch 33 which, in turn, controls the line current to the rotary switch 34, which, in turn, controls the duration of the current supply to the motor 31. The purpose of the rotary switch 34 is to govern the amount of the fuel dispensed. Obviously, the rotor 50 (see Figure 8) can be seen from time to time to permit replacement of rotors having diiferent lengths of contacts 5!. The motion for the rotary switch 34, the dial 8, and the coin holder I2 is furnished by the turbine 46 which, in turn, is operated by the fluid moving to the outlet 9 under pressure from the pump 45, the pump being driven by the motor 37.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

A liquid dispensing machine comprising a liquid source, a pump, an electric motor in driving connection with the pump, said liquid source being connected to the pump, and an outlet conduit from the pump, a turbine to which the conduit is connected, a dispensing outlet for the turbine, a shaft driven by the turbine, a current supply, a duration switch on the shaft interposed between the current supply and the motor, and manual means for setting the shaft, said manual means consisting of a ratchet wheel on the shaft, a bracket, a slide member slidably supported by the bracket, a pawl having a shank slidably disposed through the slide member, spring means for normally engaging the pawl with the ratchet wheel, a manually engageable head at the outer end of the slide member and spring means for holding the slide member in an outwardly extended position with respect to the pawl.

CHARLES-D. WOOD. 

